III

SEC source: 0001989706-26-000012 · form4-09032026_040909.xml · nonDerivative · entry 1

Sherrick Michael A. · CIK 0001989706 · EVP & CHIEF FINANCIAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 364,551

F1 · kind: Represents deemed disposition of shares of common stock to the Issuer as a result of withholding of shares of common stock to satisfy tax withholding obligations in connection with vesting of restricted stock units issued in accordance with Rule 16b-3.

SEC source: 0001708533-26-000010 · form4-08202026_080847.xml · derivative · entry 3

Kucinski Thomas S. · CIK 0001708533 · EVP, CHIEF HR

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 7,764 shares

Expires 2029-06-02

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: On June 2, 2025, the Reporting Person received a grant of RSUs that could be earned based on the achievement of market price goals, which were measured as the average closing price of issuer's common stock over any ten consecutive trading day period beginning with the first anniversary of the award. 100% of the number of RSUs will be earned if the measured market price is $5.00 or above This performance condition was met on August 18, 2026, and 100% of the performance-based RSUs were fully vested.

F1 · shares: On June 2, 2025, the Reporting Person received a grant of RSUs that could be earned based on the achievement of market price goals, which were measured as the average closing price of issuer's common stock over any ten consecutive trading day period beginning with the first anniversary of the award. 100% of the number of RSUs will be earned if the measured market price is $5.00 or above This performance condition was met on August 18, 2026, and 100% of the performance-based RSUs were fully vested.

SEC source: 0001708533-26-000010 · form4-08202026_080847.xml · nonDerivative · entry 2

Kucinski Thomas S. · CIK 0001708533 · EVP, CHIEF HR

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 336,820

F2 · kind: Represents deemed disposition of shares of common stock to the Issuer as a result of withholding of shares of common stock to satisfy tax withholding obligations in connection with vesting of restricted stock units issued in accordance with Rule 16b-3.

F3 · balance_after: Includes 236 shares acquired under the Information Services Group, Inc. Amended and Restated 2007 Employee Stock Purchase Plan.

SEC source: 0001708533-26-000010 · form4-08202026_080847.xml · nonDerivative · entry 1

Kucinski Thomas S. · CIK 0001708533 · EVP, CHIEF HR

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 340,781

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: On June 2, 2025, the Reporting Person received a grant of RSUs that could be earned based on the achievement of market price goals, which were measured as the average closing price of issuer's common stock over any ten consecutive trading day period beginning with the first anniversary of the award. 100% of the number of RSUs will be earned if the measured market price is $5.00 or above This performance condition was met on August 18, 2026, and 100% of the performance-based RSUs were fully vested.

SEC source: 0001760914-26-000010 · form4-08202026_080854.xml · derivative · entry 3

Lavieri Todd D. · CIK 0001760914 · VICE CHAIRMAN

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 25,880 shares

Expires 2029-06-02

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: On June 2, 2025, the Reporting Person received a grant of RSUs that could be earned based on the achievement of market price goals, which were measured as the average closing price of issuer's common stock over any ten consecutive trading day period beginning with the first anniversary of the award. 100% of the number of RSUs will be earned if the measured market price is $5.00 or above This performance condition was met on August 18, 2026, and 100% of the performance-based RSUs were fully vested.

SEC source: 0001760914-26-000010 · form4-08202026_080854.xml · nonDerivative · entry 2

Lavieri Todd D. · CIK 0001760914 · VICE CHAIRMAN

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,219,105

F2 · kind: Represents deemed disposition of shares of common stock to the Issuer as a result of withholding of shares of common stock to satisfy tax withholding obligations in connection with vesting of restricted stock units issued in accordance with Rule 16b-3.

F3 · balance_after: Includes 1,013 shares acquired under the Information Services Group, Inc. Amended and Restated 2007 Employee Stock Purchase Plan.

SEC source: 0001760914-26-000010 · form4-08202026_080854.xml · nonDerivative · entry 1

Lavieri Todd D. · CIK 0001760914 · VICE CHAIRMAN

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,229,573

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: On June 2, 2025, the Reporting Person received a grant of RSUs that could be earned based on the achievement of market price goals, which were measured as the average closing price of issuer's common stock over any ten consecutive trading day period beginning with the first anniversary of the award. 100% of the number of RSUs will be earned if the measured market price is $5.00 or above This performance condition was met on August 18, 2026, and 100% of the performance-based RSUs were fully vested.

SEC source: 0001989706-26-000010 · form4-08202026_080832.xml · derivative · entry 3

Sherrick Michael A. · CIK 0001989706 · EVP & CHIEF FINANCIAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 18,116 shares

Expires 2029-06-02

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: On June 2, 2025, the Reporting Person received a grant of RSUs that could be earned based on the achievement of market price goals, which were measured as the average closing price of issuer's common stock over any ten consecutive trading day period beginning with the first anniversary of the award. 100% of the number of RSUs will be earned if the measured market price is $5.00 or above This performance condition was met on August 18, 2026, and 100% of the performance-based RSUs were fully vested.

F1 · shares: On June 2, 2025, the Reporting Person received a grant of RSUs that could be earned based on the achievement of market price goals, which were measured as the average closing price of issuer's common stock over any ten consecutive trading day period beginning with the first anniversary of the award. 100% of the number of RSUs will be earned if the measured market price is $5.00 or above This performance condition was met on August 18, 2026, and 100% of the performance-based RSUs were fully vested.

SEC source: 0001989706-26-000010 · form4-08202026_080832.xml · nonDerivative · entry 2

Sherrick Michael A. · CIK 0001989706 · EVP & CHIEF FINANCIAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 431,547

F2 · kind: Represents deemed disposition of shares of common stock to the Issuer as a result of withholding of shares of common stock to satisfy tax withholding obligations in connection with vesting of restricted stock units issued in accordance with Rule 16b-3.

SEC source: 0001989706-26-000010 · form4-08202026_080832.xml · nonDerivative · entry 1

Sherrick Michael A. · CIK 0001989706 · EVP & CHIEF FINANCIAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 442,301

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: On June 2, 2025, the Reporting Person received a grant of RSUs that could be earned based on the achievement of market price goals, which were measured as the average closing price of issuer's common stock over any ten consecutive trading day period beginning with the first anniversary of the award. 100% of the number of RSUs will be earned if the measured market price is $5.00 or above This performance condition was met on August 18, 2026, and 100% of the performance-based RSUs were fully vested.

SEC source: 0001249201-26-000009 · form4-06032026_040601.xml · nonDerivative · entry 1

CONNORS MICHAEL P · CIK 0001249201 · Director · CHAIRMAN & CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,156,729

F1 · kind: Represents deemed disposition of shares of common stock to the Issuer as a result of withholding of shares of common stock to satisfy tax withholding obligations in connection with vesting of RSUs issued in accordance with Rule 16b-3.

SEC source: 0001989706-26-000008 · form4-06032026_040607.xml · nonDerivative · entry 1

Sherrick Michael A. · CIK 0001989706 · EVP & CHIEF FINANCIAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 424,185

F1 · kind: Represents deemed disposition of shares of common stock to the Issuer as a result of withholding of shares of common stock to satisfy tax withholding obligations in connection with vesting of restricted stock units issued in accordance with Rule 16b-3

SEC source: 0001760914-26-000008 · form4-06032026_040605.xml · nonDerivative · entry 1

Lavieri Todd D. · CIK 0001760914 · VICE CHAIRMAN

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,203,693

F1 · kind: Represents deemed disposition of shares of common stock to the Issuer as a result of withholding of shares of common stock to satisfy tax withholding obligations in connection with vesting of restricted stock units issued in accordance with Rule 16b-3.

SEC source: 0001708533-26-000008 · form4-06032026_040603.xml · nonDerivative · entry 1

Kucinski Thomas S. · CIK 0001708533 · EVP, CHIEF HR

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 333,017

F1 · kind: Represents deemed disposition of shares of common stock to the Issuer as a result of withholding of shares of common stock to satisfy tax withholding obligations in connection with vesting of restricted stock units issued in accordance with Rule 16b-3.

SEC source: 0001249201-26-000006 · form4-04032026_010401.xml · derivative · entry 2

CONNORS MICHAEL P · CIK 0001249201 · Director · CHAIRMAN & CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 468,750

Underlying: Common Stock · 468,750 shares

Expires 2029-04-02

F2 · derivative.exercise_price: Represents a grant of RSUs that may be earned based on achievement of certain market price goals, which will be measured at the average closing price of the issuer's common stock over the forty-five-trading-day period prior to and including the third anniversary of the date of grant. 50% of the number of RSUs reported above will be earned if the measured market price is $5.25, 75% of the RSUs will be earned if the measured market price is $6.00 and 100% of the RSUs will be earned if the measured market price is $7.00 or above, with interpolation of the number of earned RSUs between these share price points. In addition, if the measured market price meets or exceeds $7.00 at any time before and including the third anniversary of the award, 100% of the RSUs will be earned. Unearned RSUs will be canceled. Market price goals are subject to adjustment for stock splits and certain other corporate events. Once determined, any such earned RSUs will be fully vested.

F2 · derivative.exercise_date: Represents a grant of RSUs that may be earned based on achievement of certain market price goals, which will be measured at the average closing price of the issuer's common stock over the forty-five-trading-day period prior to and including the third anniversary of the date of grant. 50% of the number of RSUs reported above will be earned if the measured market price is $5.25, 75% of the RSUs will be earned if the measured market price is $6.00 and 100% of the RSUs will be earned if the measured market price is $7.00 or above, with interpolation of the number of earned RSUs between these share price points. In addition, if the measured market price meets or exceeds $7.00 at any time before and including the third anniversary of the award, 100% of the RSUs will be earned. Unearned RSUs will be canceled. Market price goals are subject to adjustment for stock splits and certain other corporate events. Once determined, any such earned RSUs will be fully vested.

SEC source: 0001249201-26-000006 · form4-04032026_010401.xml · nonDerivative · entry 1

CONNORS MICHAEL P · CIK 0001249201 · Director · CHAIRMAN & CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,213,380

F1 · kind: Represents restricted stock units (RSUs) granted to the reporting person pursuant to the Information Services Group, Inc. Amended and Restated 2007 Equity and Incentive Award Plan, which will vest in 4 equal installments on each of the first, second, third and fourth anniversaries of April 1, 2026.

SEC source: 0001708533-26-000006 · form4-04032026_010407.xml · derivative · entry 2

Kucinski Thomas S. · CIK 0001708533 · EVP, CHIEF HR

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,766

Underlying: Common Stock · 9,766 shares

Expires 2030-04-01

F3 · derivative.exercise_price: Represents a grant of RSUs that may be earned based on the achievement of market price goals, which will be measured as the average closing price of issuer's common stock over any ten consecutive trading day period beginning with the first anniversary of the award. 100% of the number of RSUs will be earned if the measured market price is $5.25 or above. If this measured market price is not achieved by the fourth anniversary of the award, these RSUs will be forfeited. Market price goals are subject to adjustment for stock splits and certain other corporate events. Once determined, any such earned RSUs will be fully vested.

F3 · derivative.exercise_date: Represents a grant of RSUs that may be earned based on the achievement of market price goals, which will be measured as the average closing price of issuer's common stock over any ten consecutive trading day period beginning with the first anniversary of the award. 100% of the number of RSUs will be earned if the measured market price is $5.25 or above. If this measured market price is not achieved by the fourth anniversary of the award, these RSUs will be forfeited. Market price goals are subject to adjustment for stock splits and certain other corporate events. Once determined, any such earned RSUs will be fully vested.

SEC source: 0001708533-26-000006 · form4-04032026_010407.xml · nonDerivative · entry 1

Kucinski Thomas S. · CIK 0001708533 · EVP, CHIEF HR

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 345,436

F1 · kind: Represents restricted stock units (RSUs) granted to the reporting person pursuant to the Information Services Group, Inc. Amended and Restated 2007 Equity and Incentive Award Plan, which will vest in 4 equal installments on each of the first, second, third and fourth anniversaries of April 1, 2026.

F2 · balance_after: Includes 253 shares acquired under the Information Services Group, Inc. Amended and Restated 2007 Employee Stock Purchase Plan.

SEC source: 0001760914-26-000006 · form4-04032026_010405.xml · derivative · entry 2

Lavieri Todd D. · CIK 0001760914 · VICE CHAIRMAN

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,552

Underlying: Common Stock · 32,552 shares

Expires 2030-04-01

F3 · derivative.exercise_price: Represents a grant of RSUs that may be earned based on the achievement of market price goals, which will be measured as the average closing price of issuer's common stock over any ten consecutive trading day period beginning with the first anniversary of the award. 100% of the number of RSUs will be earned if the measured market price is $5.25 or above. If this measured market price is not achieved by the fourth anniversary of the award, these RSUs will be forfeited. Market price goals are subject to adjustment for stock splits and certain other corporate events. Once determined, any such earned RSUs will be fully vested.

F3 · derivative.exercise_date: Represents a grant of RSUs that may be earned based on the achievement of market price goals, which will be measured as the average closing price of issuer's common stock over any ten consecutive trading day period beginning with the first anniversary of the award. 100% of the number of RSUs will be earned if the measured market price is $5.25 or above. If this measured market price is not achieved by the fourth anniversary of the award, these RSUs will be forfeited. Market price goals are subject to adjustment for stock splits and certain other corporate events. Once determined, any such earned RSUs will be fully vested.

SEC source: 0001760914-26-000006 · form4-04032026_010405.xml · nonDerivative · entry 1

Lavieri Todd D. · CIK 0001760914 · VICE CHAIRMAN

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,239,268

F1 · kind: Represents restricted stock units (RSUs) granted to the reporting person pursuant to the Information Services Group, Inc. Amended and Restated 2007 Equity and Incentive Award Plan, which will vest in 4 equal installments on each of the first, second, third and fourth anniversaries of April 1, 2026.

F2 · balance_after: Includes 1,084 shares acquired under the Information Services Group, Inc. Amended and Restated 2007 Employee Stock Purchase Plan.

SEC source: 0001989706-26-000006 · form4-04032026_010403.xml · derivative · entry 2

Sherrick Michael A. · CIK 0001989706 · EVP & CHIEF FINANCIAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 22,786

Underlying: Common Stock · 22,786 shares

Expires 2030-04-01

F2 · derivative.exercise_price: Represents a grant of RSUs that may be earned based on the achievement of market price goals, which will be measured as the average closing price of issuer's common stock over any ten consecutive trading day period beginning with the first anniversary of the award. 100% of the number of RSUs will be earned if the measured market price is $5.25 or above. If this measured market price is not achieved by the fourth anniversary of the award, these RSUs will be forfeited. Market price goals are subject to adjustment for stock splits and certain other corporate events. Once determined, any such earned RSUs will be fully vested.

F2 · derivative.exercise_date: Represents a grant of RSUs that may be earned based on the achievement of market price goals, which will be measured as the average closing price of issuer's common stock over any ten consecutive trading day period beginning with the first anniversary of the award. 100% of the number of RSUs will be earned if the measured market price is $5.25 or above. If this measured market price is not achieved by the fourth anniversary of the award, these RSUs will be forfeited. Market price goals are subject to adjustment for stock splits and certain other corporate events. Once determined, any such earned RSUs will be fully vested.

SEC source: 0001989706-26-000006 · form4-04032026_010403.xml · nonDerivative · entry 1

Sherrick Michael A. · CIK 0001989706 · EVP & CHIEF FINANCIAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 444,611

F1 · kind: Represents restricted stock units (RSUs) granted to the reporting person pursuant to the Information Services Group, Inc. Amended and Restated 2007 Equity and Incentive Award Plan, which will vest in 4 equal installments on each of the first, second, third and fourth anniversaries of April 1, 2026.

SEC source: 0001249201-26-000004 · form4-03192026_040301.xml · nonDerivative · entry 1

CONNORS MICHAEL P · CIK 0001249201 · Director · CHAIRMAN & CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,083,172

F1 · kind: Represents deemed disposition of shares of common stock to the Issuer as a result of withholding of shares of common stock to satisfy tax withholding obligations in connection with vesting of restricted stock units issued in accordance with Rule 16b-3.

SEC source: 0001989706-26-000004 · form4-03192026_040309.xml · nonDerivative · entry 1

Sherrick Michael A. · CIK 0001989706 · EVP & CHIEF FINANCIAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 376,252

F1 · kind: Represents deemed disposition of shares of common stock to the Issuer as a result of withholding of shares of common stock to satisfy tax withholding obligations in connection with vesting of restricted stock units issued in accordance with Rule 16b-3.

SEC source: 0001760914-26-000004 · form4-03192026_040307.xml · nonDerivative · entry 1

Lavieri Todd D. · CIK 0001760914 · VICE CHAIRMAN

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,140,528

F1 · kind: Represents deemed disposition of shares of common stock to the Issuer as a result of withholding of shares of common stock to satisfy tax withholding obligations in connection with vesting of restricted stock units issued in accordance with Rule 16b-3.

SEC source: 0001708533-26-000004 · form4-03192026_040305.xml · nonDerivative · entry 1

Kucinski Thomas S. · CIK 0001708533 · EVP, CHIEF HR

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 315,886

F1 · kind: Represents deemed disposition of shares of common stock to the Issuer as a result of withholding of shares of common stock to satisfy tax withholding obligations in connection with vesting of restricted stock units issued in accordance with Rule 16b-3.

SEC source: 0001249201-26-000002 · form4-03172026_040301.xml · nonDerivative · entry 1

CONNORS MICHAEL P · CIK 0001249201 · Director · CHAIRMAN & CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,139,531

F1 · kind: Represents restricted stock units (RSUs) granted to the reporting pursuant to the Information Services Group, Inc. Amended and Restated 2007 Equity and Incentive Award Plan, which will vest 100% on March 13, 2027.

SEC source: 0001708533-26-000002 · form4-03172026_040308.xml · nonDerivative · entry 1

Kucinski Thomas S. · CIK 0001708533 · EVP, CHIEF HR

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 326,908

F1 · kind: Represents restricted stock units (RSUs) granted to the reporting pursuant to the Information Services Group, Inc. Amended and Restated 2007 Equity and Incentive Award Plan, which will vest 100% on March 13, 2026.

F2 · balance_after: Includes 540 shares acquired under the Information Services Group, Inc. Amended and Restated 2007 Employee Stock Purchase Plan.

SEC source: 0001989706-26-000002 · form4-03172026_040306.xml · nonDerivative · entry 1

Sherrick Michael A. · CIK 0001989706 · EVP & CHIEF FINANCIAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 403,503

F1 · kind: Represents restricted stock units (RSUs) granted to the reporting pursuant to the Information Services Group, Inc. Amended and Restated 2007 Equity and Incentive Award Plan, which will vest 100% on March 13, 2027.

SEC source: 0001760914-26-000002 · form4-03172026_040304.xml · nonDerivative · entry 1

Lavieri Todd D. · CIK 0001760914 · VICE CHAIRMAN

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,159,907

F1 · kind: Represents restricted stock units (RSUs) granted to the reporting pursuant to the Information Services Group, Inc. Amended and Restated 2007 Equity and Incentive Award Plan, which will vest 100% on March 13, 2027.

F2 · balance_after: Includes 2,187 shares acquired under the Information Services Group, Inc. Amended and Restated 2007 Employee Stock Purchase Plan.

SEC source: 0001104659-26-019649 · tm267310-2_4seq1.xml · nonDerivative · entry 2

Chevrillon & Associes · CIK 0001531885 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · By CPIV S.A.

Disclosed balance after: 2,048,607

SEC source: 0001229271-25-000008 · form4-12122025_101257.xml · nonDerivative · entry 2

RAINA KALPANA · CIK 0001229271 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 388,613

F1 · kind: Represents a sale of shares of common stock to satisfy tax obligations in connection with vesting of restricted stock units and deferred receipt of the related shares of common stock.

SEC source: 0001781412-25-000008 · form4-12122025_101217.xml · nonDerivative · entry 1

Pfau Bruce · CIK 0001781412 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 189,909

F1 · kind: Represents a sale of shares of common stock to satisfy tax obligations in connection with vesting of restricted stock units and deferred receipt of the related shares of common stock.

SEC source: 0001104659-26-019649 · tm267310-2_4seq1.xml · nonDerivative · entry 1

Chevrillon & Associes · CIK 0001531885 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,188,888

SEC source: 0001229271-25-000008 · form4-12122025_101257.xml · nonDerivative · entry 1

RAINA KALPANA · CIK 0001229271 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 392,517

F1 · kind: Represents a sale of shares of common stock to satisfy tax obligations in connection with vesting of restricted stock units and deferred receipt of the related shares of common stock.

SEC source: 0001104659-25-119806 · tm2533154-1_4seq1.xml · nonDerivative · entry 1

MOLINARO SAMUEL L JR · CIK 0001180153 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 56,409

F1 · kind: Grant of restricted stock units which vest in 3 equal installments on each of the first, second and third anniversaries of December 9, 2025 (or earlier in the event of a change of control of ISG or such director's death or disability).

SEC source: 0001262377-25-000006 · form4-12092025_091207.xml · nonDerivative · entry 1

HOBBS GERALD S · CIK 0001262377 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 604,069

F1 · kind: Grant of restricted stock units which vest in 3 equal installments on each of the first, second and third anniversaries of December 9, 2025 (or earlier in the event of a change of control of ISG or such director's death or disability).

SEC source: 0001229271-25-000006 · form4-12092025_091205.xml · nonDerivative · entry 2

RAINA KALPANA · CIK 0001229271 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 396,997

F2 · kind: Grant of restricted stock units which vest in 3 equal installments on each of the first, second and third anniversaries of December 9, 2025 (or earlier in the event of a change of control of ISG or such director's death or disability).

SEC source: 0001603246-25-000006 · form4-12092025_091203.xml · nonDerivative · entry 2

Putur Christine · CIK 0001603246 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 321,898

F2 · kind: Grant of restricted stock units which vest in 3 equal installments on each of the first, second and third anniversaries of December 9, 2025 (or earlier in the event of a change of control of ISG or such director's death or disability).

SEC source: 0001781412-25-000006 · form4-12092025_091201.xml · nonDerivative · entry 2

Pfau Bruce · CIK 0001781412 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 193,325

F2 · kind: Grant of restricted stock units which vest in 3 equal installments on each of the first, second and third anniversaries of December 9, 2025 (or earlier in the event of a change of control of ISG or such director's death or disability).

SEC source: 0001229271-25-000006 · form4-12092025_091205.xml · nonDerivative · entry 1

RAINA KALPANA · CIK 0001229271 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 376,302

F1 · kind: Represents a sale of shares of common stock to satisfy tax obligations in connection with vesting of restricted stock units and deferred receipt of the related shares of common stock.

SEC source: 0001603246-25-000006 · form4-12092025_091203.xml · nonDerivative · entry 1

Putur Christine · CIK 0001603246 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 301,203

F1 · kind: Represents a sale of shares of common stock to satisfy tax obligations in connection with vesting of restricted stock units and deferred receipt of the related shares of common stock.

SEC source: 0001781412-25-000006 · form4-12092025_091201.xml · nonDerivative · entry 1

Pfau Bruce · CIK 0001781412 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 172,630

F1 · kind: Represents a sale of shares of common stock to satisfy tax obligations in connection with vesting of restricted stock units and deferred receipt of the related shares of common stock.

SEC source: 0001249201-25-000005 · form4-11132025_011130.xml · nonDerivative · entry 4

CONNORS MICHAEL P · CIK 0001249201 · Director · CHAIRMAN & CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,040,029

F1 · kind: The sale was made pursuant to Rule 144 under the Securities Act of 1933, as previously disclosed in a Form 144 filed by the reporting person on November 6, 2025. The transactions were effectuated for estate planning and tax purposes,

SEC source: 0001249201-25-000005 · form4-11132025_011130.xml · nonDerivative · entry 3

CONNORS MICHAEL P · CIK 0001249201 · Director · CHAIRMAN & CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,106,225

F1 · kind: The sale was made pursuant to Rule 144 under the Securities Act of 1933, as previously disclosed in a Form 144 filed by the reporting person on November 6, 2025. The transactions were effectuated for estate planning and tax purposes,

SEC source: 0001249201-25-000005 · form4-11132025_011130.xml · nonDerivative · entry 2

CONNORS MICHAEL P · CIK 0001249201 · Director · CHAIRMAN & CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,206,321

F1 · kind: The sale was made pursuant to Rule 144 under the Securities Act of 1933, as previously disclosed in a Form 144 filed by the reporting person on November 6, 2025. The transactions were effectuated for estate planning and tax purposes,

SEC source: 0001249201-25-000005 · form4-11132025_011130.xml · nonDerivative · entry 1

CONNORS MICHAEL P · CIK 0001249201 · Director · CHAIRMAN & CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,284,797

F1 · kind: The sale was made pursuant to Rule 144 under the Securities Act of 1933, as previously disclosed in a Form 144 filed by the reporting person on November 6, 2025. The transactions were effectuated for estate planning and tax purposes,

SEC source: 0001415889-25-023535 · form4-09032025_040910.xml · nonDerivative · entry 1

Sherrick Michael A. · CIK 0001989706 · EVP & CHIEF FINANCIAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 358,727

F1 · kind: Represents deemed disposition of shares of common stock to the Issuer as a result of withholding of shares of common stock to satisfy tax withholding obligations in connection with vesting of RSUs issued in accordance with Rule 16b-3.

SEC source: 0001415889-25-021840 · form4-08142025_040801.xml · nonDerivative · entry 1

Pfau Bruce · CIK 0001781412 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 175,419

F1 · kind: Represents a sale of shares of common stock to satisfy tax obligations.

SEC source: 0001415889-25-021028 · form4-08052025_040801.xml · nonDerivative · entry 1

Sherrick Michael A. · CIK 0001989706 · EVP & CHIEF FINANCIAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 366,378

F1 · kind: Represents deemed disposition of shares of common stock to the Issuer as a result of withholding of shares of common stock to satisfy tax withholding obligations in connection with vesting of RSUs issued in accordance with Rule 16b-3.